One of the arguments that has been used in British Columbia for the mail-in ballot is its cost-effectiveness. Our budget for the last provincial general election was about $35 million. The HST referendum that was conducted with mail-in balloting was just over $8 million. It's a much less expensive option and in British Columbia we have confidence in the integrity of a referendum process that uses mail-in ballots.
On September 27th, 2016. See this statement in context.